I thought I'd up date you on the speedo troubleshooting. I pulled the dash panel and tried to unscrew the speedo. In the middle of this, my Dad who is in the hospital called and need me to go to Drs. appt with him so I abandoned the project to go with him. Today I started the bus to run a few minutes and charge the batteries, and the odometer faintly showed the numbers. I beleive I must have flexed or 'tweaked' the wires as I tried to unscrew it, possibly making a reconnection. Do you think maybe pulling the connections from the inputs and spraying contact cleaner may make the readout more bold? I didn't mess with the tach yet, just the speedometer.
Thanks for encouraging me to check the gauge out first, hopefully saving us needless replacement expense.